I was trying to find some flat mirror clips for a clip on tray,
it takes no real weight, but then I thought why not use magnets.
using a forstner bit I fitted two magnets into the edge of my box
and steel plates onto the tray, bingo the strength of these magnets
is amazing one secure aux. tray.
I am toying with the idea of a collapsible storage box something to
assemble once on site for additional internal storage without undue
damage to the caravans fabric.
http://e-magnetsuk.com/magnet_products/n...ng_magnets.aspx